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author | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-10-06 23:23:13 +0000 |
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committer | mdkinney <mdkinney@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-10-06 23:23:13 +0000 |
commit | 7b3b4b2992bf89ee5f1aa3df2e2af9c988c49e69 (patch) | |
tree | 76d7394548723d66a7de91e6e79af3c444bd0c48 /MdePkg/Library/BaseMemoryLibOptPei/Ia32/CompareMem.S | |
parent | 18be21dc5e39c7e8293f6795266662cf77c0b713 (diff) | |
download | edk2-platforms-7b3b4b2992bf89ee5f1aa3df2e2af9c988c49e69.tar.xz |
Add BaseMemoryLib optimized for PEI
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4035 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibOptPei/Ia32/CompareMem.S')
-rw-r--r-- | MdePkg/Library/BaseMemoryLibOptPei/Ia32/CompareMem.S | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibOptPei/Ia32/CompareMem.S b/MdePkg/Library/BaseMemoryLibOptPei/Ia32/CompareMem.S new file mode 100644 index 0000000000..725367b2f9 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibOptPei/Ia32/CompareMem.S @@ -0,0 +1,53 @@ +#------------------------------------------------------------------------------ +# +# Copyright (c) 2006, Intel Corporation +# All rights reserved. This program and the accompanying materials +# are licensed and made available under the terms and conditions of the BSD License +# which accompanies this distribution. The full text of the license may be found at +# http://opensource.org/licenses/bsd-license.php +# +# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +# +# Module Name: +# +# CompareMem.Asm +# +# Abstract: +# +# CompareMem function +# +# Notes: +# +# The following BaseMemoryLib instances share the same version of this file: +# +# BaseMemoryLibRepStr +# BaseMemoryLibMmx +# BaseMemoryLibSse2 +# +#------------------------------------------------------------------------------ + +.globl _InternalMemCompareMem + +#------------------------------------------------------------------------------ +# INTN +# EFIAPI +# InternalMemCompareMem ( +# IN CONST VOID *DestinationBuffer, +# IN CONST VOID *SourceBuffer, +# IN UINTN Length +# ); +#------------------------------------------------------------------------------ +_InternalMemCompareMem: + push %esi + push %edi + movl 12(%esp), %esi + movl 16(%esp), %edi + movl 20(%esp), %ecx + repe cmpsb + movzbl -1(%esi), %eax + movzbl -1(%edi), %edx + subl %edx, %eax + pop %edi + pop %esi + ret |